Home / 121,860.40-168,167.80-70,885.36

Finding the Fourth Proportional to 121,860.40, 168,167.80 and 70,885.36

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Solution

The fourth proportional to 121,860.40, 168,167.80 and 70,885.36 is: 97,822.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,860.40 : 168,167.80 = 70,885.36 : x
  2. Step 2: Convert to fraction form
    121,860.40/168,167.80 = 70,885.36/x
  3. Step 3: Cross multiply
    121,860.40x = 168,167.80 × 70,885.36
  4. Step 4: Simplify right side
    121,860.40x = 11,920,635,043.41
  5. Step 5: Solve for x
    x = 11,920,635,043.41/121,860.40
  6. Step 6: Final answer
    x = 97,822.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.